Chemistry - Complete d-block Question with Solution | TestHub

Hydrogen gas is not released when metal reacts with$\mathrm{H}\mathrm{N}{\mathrm{O}}_3$​. This is because$\mathrm{H}\mathrm{N}{\mathrm{O}}_3$is a strong oxidising agent and it immediately oxidises the${\mathrm{H}}^{+}$ion in hydrogen to form water, while its$\mathrm{N}{\mathrm{O}}_3^{-}$ion gets reduced.
$\mathrm{Z}\mathrm{n}+4\mathrm{H}\mathrm{N}{\mathrm{O}}_3\to \mathrm{Z}\mathrm{n}(\mathrm{N}{\mathrm{O}}_3{)}_2+2\mathrm{N}{\mathrm{O}}_2+2{\mathrm{H}}_2\mathrm{O}$